import java.util.ArrayList;
import java.util.List;

public class 啊Test {
    import java.util.ArrayList;
import java.util.List;

    public class Test {
    package cardDemo;

import java.util.ArrayList;
import java.util.List;

        class Card{
            public int rank;
            public String suit;

            public Card(String suit, int rank) {
                this.suit = suit;
                this.rank = rank;
            }

            @Override
            public String toString() {
                return "Card{" +
                        "rank=" + rank +
                        ", suit='" + suit + '\'' +
                        '}';
            }
        }
        public class CardDemo {
            public static final String[] suits={"♥","♦","♣","♠"};
            public List<Card> buyDeskCard(){
                List<Card> cards=new ArrayList<>();
                for (int i = 1; i <=13 ; i++) {
                    for (int j = 0; j <4 ; j++) {
                        Card card = new Card(suits[j], i);
                        cards.add(card);
                    }
                }
                return cards;
            }
            public  void shuffle(List<Card>){
            }
            public static void main(String[] args) {
                CardDemo cardDemo=new CardDemo();
                List<Card> caae= cardDemo.buyDeskCard();
                System.out.println(caae);
            }
        }

    }
